Other contributing major factors for this disease are hereditary, old age, brain injury, Down syndrome, smoking, depression, elevated homocystein level, heart problems.

The symptoms of Alzheimer disease:

Short term memory loss, inability to perform routine work, power of judgment and reasoning deteriorate, change in mood, behaviour and communication patterns, impaired language skills, emotional outbursts and in final stage the individual's ability to recognize faces and to communicate is completely lost along with the ability to control bowel and bladder control.